Represents a translator of Translatables.
It shall be more or less compatible with ResourceBundle
in terms of how candidate Locales are determined.
So, more or less the same rules apply as described in ResourceBundle.Control.getCandidateLocales.
However, it shall apply an extended fallback mechanism. In case not a single properties file could be found
for one of the candidate Locales, then instead of falling back to
ResourceBundle would do per default), one shall be able to specify fallback Locales oneself --
whether this includes
java.util.Locale.getDefaultor not on the JVM platform is up to the user of Atrium.
Moreover, the fallback even applies if a properties file for one of the candidate Locales is specified but does
not contain the property which we are looking for (
ResourceBundle would throw a MissingResourceException in
such a case).
Last but not least, Atrium's Locale does not have an equivalent of java.util.Locale.ROOT
a user can define fallback locales on its own, so there is no need for ROOT`.
Following an example.
de_CH is used as primary Locale and
fr_CH as fallback Locale.
We are looking for the translation of
DescriptionAnyAssertions.TO_BE. The following files exists:
DescriptionAnyAssertions_de_CH.properties with NOT_WHAT_WE_ARE_LOOKING_FOR = foo DescriptionAnyAssertions_fr.properties with TO_BE = est
The resolution would be as follows:
Notice, that a Translator should treat the two special cases Norwegian and Chinese differently than
ResourceBundle suggests (the actual implementation for Java is buggy anyway).
A Translator should not support Locales with Locale.language equal to
should throw an IllegalArgumentException instead.
A user has to use either
nn (for Nynorsk) or
nb (for Bokmål). One can still define the other Locale as
fallback if needed (which effectively makes the ambiguous
no Locale obsolete). As an example, one can define
nn_NO as primary Locale and
nb_NO as fallback Locale.
Furthermore it should throw an IllegalArgumentException in case one has specified
zh as language, script
Hans but did not define a country.
A user has to be explicit concerning the country. One is allowed to leave out the script but can also add it to be
explicit and avoid confusion (e.g., zh-Hans_HK for Chinese in simplified script in Hong Kong).